I was trying the audio fairly low as I saw something in a tutorial about not overloading it. Pumped up the volume a bit but still getting it starting at 25ish and settling out around 5-7.Something very odd about those screenshots is mostly near-zero INLVLs but spurts up to the 20s. Usually the INLVL would remain fairly consistent.
At any rate, I'd probably increase the audio input so that the average is around 25 INLVL. Right now, even on the highest INLVL figures it barely reaches 25.
You can increase that by increasing the level on your Recording setting for the input device your using.
What does your CPU usage look like during a decode?
Mike
I was trying the audio fairly low as I saw something in a tutorial about not overloading it. Pumped up the volume a bit but still getting it starting at 25ish and settling out around 5-7.
CPU shows 50-70% during decode. May have to give this a shot on my dual core machine.
Just fiddling around so far to see if I could get any idea of how this works. Will have to set up something with, what do you use--Unitrunker?--to control the tapped scanner. Just scrolling through freqs looking for digital is a major pain. Makes it hard to work on fine tuning things too. Need signal more often to work with.
Maybe one word or two on a 10 second or so transmission. I am leaning toward the tap since the only thing I used it for previous to a couple days ago was Motorola VHF Control Channel and in another thread we were discussing my decode of some DMR/TRBO and one guy said it looked like the log showed poor tap performance. He said the data on the Motorola VHF was much easier to decode and suggested a voltage divider. That's why I wanted to give the Provoice a shot and I think this confirms the tap is crummy.Can you make anything out at all, or is it competely garbled all the time? If its compltely garbled all the time and you can't make out a single word, maybe it is a tap issue.
mike
Hey, no sweat joining in.I'm experiencing similar issues with DSD on my laptop and I think the problem is it's an old tired laptop with an old tired soundcard and it's not really up to the task of properly decoding P25. That and my ancient BC895 that I've been using for this is ready to become a fossil.
I'm ready to take the next step and get a couple of those SDR dongles I keep hearing about and setting up a dedicated desktop machine for the task. Rather than muck up your thread, I will start my own to seek advice for the project but it's my experience/guess that your machine just isn't up to the task - that's the problem with mine.
-AZ
Hey, no sweat joining in.
I was just tinkering with another tapped scanner and have got the inlvl up in the high 30's and even 40's. Getting a bit of understandable audio. When I do start to hear some good audio the CPU usage shoots up to 95% or more, so I think the same as you, need more power.
Funny thing is that when I tried this tap it was even worse on DMR than the first one, go figure.
Fun messing around with it though.
I am having the same issues with an old Uniden 800xlt and a 6 year old laptop. I didnt use a resistor at the output of the scanner tap and was going to spend some time at the weekend rebuilding the tap so see if I can get any improvement.
I was toying with the idea of adding a USB sound card to seperate the input and output hardware. I dont want to waste any more money or time on this unless I would get results. Any thoughts?
Actually the stuff I was playing around with DMR was completely different. Not sure exactly the details of this system.....This is on a simulcast CQPSK system though, not DMR....
I have been trying this with a USB XFI. The laptop only has a mic-in and when I hook it to the tap the first scanner basically stops receiving period. I'm guessing due to the poor quality of the tap. Looks like the second scanner will be the one to play with for now.I am having the same issues with an old Uniden 800xlt and a 6 year old laptop. I didnt use a resistor at the output of the scanner tap and was going to spend some time at the weekend rebuilding the tap so see if I can get any improvement.
I was toying with the idea of adding a USB sound card to seperate the input and output hardware. I dont want to waste any more money or time on this unless I would get results. Any thoughts?
when I hook it to the tap the first scanner basically stops receiving
Agreed.Something very odd about those screenshots is mostly near-zero INLVLs but spurts up to the 20s. Usually the INLVL would remain fairly consistent,